/* 
 * Copyright (c) 2004-2005 Massachusetts Institute of Technology. This code was
 * developed as part of the Haystack (http://haystack.lcs.mit.edu/) research 
 * project at MIT. Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation files (the 
 * "Software"), to deal in the Software without restriction, including without 
 * limitation the rights to use, copy, modify, merge, publish, distribute, 
 * sublicense, and/or sell copies of the Software, and to permit persons to whom
 * the Software is furnished to do so, subject to the following conditions: 
 * 
 * The above copyright notice and this permission notice shall be included in 
 * all copies or substantial portions of the Software. 
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER  
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE. 
 */

/*
 * Created on Jul 26, 2005
 */
package edu.mit.csail.relo.parts;

import org.eclipse.gef.commands.Command;

public class ArtifactRelReConnectionCommand extends Command {

    private final ArtifactRelEditPart linkPart;
    private ArtifactEditPart origSource;
    private ArtifactEditPart origTarget;
    private ArtifactEditPart newTarget;
    private ArtifactEditPart newSource;

    public ArtifactRelReConnectionCommand(ArtifactRelEditPart linkPart) {
        this.linkPart = linkPart;
        this.origSource = (ArtifactEditPart) linkPart.getSource();
        this.origTarget = (ArtifactEditPart) linkPart.getTarget();
    }

    public void setNewConnectionPoints(ArtifactEditPart newSource, ArtifactEditPart newTarget) {
        this.newSource = newSource;
        this.newTarget = newTarget;
    }

    @Override
    public boolean canExecute() {
        return newSource.isActive() && newTarget.isActive();
    }

    @Override
    public void execute() {
        linkPart.getArtifactRel().init(newSource, newTarget, linkPart.getArtifactRel().getType());
        newSource.getRootController().reConnectRel(newSource, linkPart, newTarget);
    }

    @Override
	public void undo() { 
        linkPart.getArtifactRel().init(origSource, origTarget, linkPart.getArtifactRel().getType());
        origSource.getRootController().reConnectRel(origSource, linkPart, origTarget);
    }

}